   (when-not (load-and-callback! nil file :clj :calculate-cache-prefix cb)
     (cb nil)))
 
+;; Represents code for which the goog JS is already loaded
+(defn- skip-load-goog-js?
+  [name]
+  ('#{goog.object
+      goog.string
+      goog.string.StringBuffer
+      goog.math.Long} name))
+
 (defn- do-load-goog
   [name cb]
-  (if-let [goog-path (get (closure-index-mem) name)]
-    (when-not (load-and-callback! name (str goog-path ".js") :js nil cb)
-      (cb nil))
-    (cb nil)))
+  (if (skip-load-goog-js? name)
+    (cb {:lang   :js
+         :source ""})
+    (if-let [goog-path (get (closure-index-mem) name)]
+      (when-not (load-and-callback! name (str goog-path ".js") :js nil cb)
+        (cb nil))
+      (cb nil))))
 
 (defn- do-load-other
   [name path macros cb]

                  (and (= *clojurescript-version* cljs-ver)
                       (= build-affecting-options (form-build-affecting-options))))))))

(defn- cached-callback-data
  [name path cache-prefix source source-modified raw-load]
  (let [cache-prefix (if (= :calculate-cache-prefix cache-prefix)

          "for" path))
      (when (and sourcemap-json name)
        (swap! st assoc-in [:source-maps name] (transit-json->cljs sourcemap-json)))
      (when-not (skip-load-js? name)
        (js/PLANCK_EVAL js-source path))
      (merge {:lang   :js
              :source ""}
        (when cache-json
